Emissions from Nine Heavy Trucks Fueled by Diesel and Biodiesel Blend without Engine Modification

W. G. Wang,* D. W. Lyons, N. N. Clark, and M. Gautam

West Virginia University, Morgantown, West Virginia 26506-6106

P. M. Norton

National Renewable Energy Laboratory, Golden, Colorado 80401

Diesel fuel made from natural renewable sources such as vegetable oils or animal fats lowered air-polluting emissions of heavy trucks in a trial study, according to researchers. They say the so-called "biodiesel" fuel can be used in regular diesel engines without modifying them.

The scientists studied a blend of 35 percent biodiesel fuel and 65 percent conventional diesel fuel. They found that this emitted significantly less carbon monoxide and moderately less hydrocarbons and particulate matter, compared to 100 percent petroleum diesel.

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